Flora of North America species comparison

slender, 0.5–1 mm diam.

absent.

erect to ascending, branched, 1.5–2 dm.

(simple or few from base), erect to ascending, (not flexuous), unbranched or branched distally, (0.5–)0.8–3.2(–4.1) dm, usually pubescent throughout or proximally, rarely glabrous.

(persistent to anthesis), rosulate, pinnately compound, 5–9(–13)-foliolate, 2–8.5(–11) cm, leaflets petiolulate or subsessile;

petiole 1–6 cm;

lateral leaflets petiolulate or subsessile, blade obovate to oblanceolate, smaller than terminal, margins entire or crenate;

terminal leaflet (petiolule 0.1–0.7 cm), blade usually orbicular to ovate, rarely oblong, 0.4–1.5(–2.3) cm × 3–10(–13) mm, base cordate to rounded, margins entire, or crenate-dentate to obscurely 3 or 5-lobed, (surfaces often hirsute, sometimes glabrous).

3 or 4, 3- or 5-foliolate, petiolate, leaflets petiolulate;

petiole 0.5–1.7 cm, base not auriculate;

lateral leaflet blade linear to linear-lanceolate, 0.9–1.5 cm × 1–3 mm, margins entire;

terminal leaflet (petiolule 0.3–0.5 cm), blade obovate to lanceolate (linear distally), 1.3–2.3 cm × 2–8 mm, base cuneate, margins entire or subapically 1- or 2-toothed.

3–8, pinnately compound, similar to basal, smaller and fewer distally, petiolate, leaflets petiolulate or subsessile;

petiole 0.5–2 cm, base not auriculate.

ebracteate.

ebracteate.

sepals oblong, 1.2–1.5 × 0.6–0.8 mm, lateral pair not saccate basally;

petals white, oblanceolate, 2–2.5 × 0.8–1 mm, (not clawed, apex rounded);

filaments: median pairs 1.5–1.8 mm, lateral pair 1–1.2 mm;

anthers ovate, 0.2–0.3 mm.

sepals oblong, 1.3–1.8(–2) × 0.5–1 mm, lateral pair not saccate basally;

petals white, narrowly spatulate to oblanceolate, 2.5–3.5 × 0.9–1.5 mm (not clawed);

filaments: median pairs 1.7–2.5 mm, lateral pair 1.2–2 mm;

anthers ovate, 0.3–0.5 mm.

ascending to suberect, 5–14 mm.

divaricate-ascending, (2–)3–9(–12) mm.

linear, 1–2 cm × ca. 1 mm;

ovules 16–24 per ovary;

style 0.5–0.7 mm.

linear, (torulose), (1.3–)1.6–2.8 cm × 1–1.7 mm; (valves glabrous or sparsely pubescent);

ovules 16–36(–42) per ovary;

style 0.4–1(–1.5) mm.

brown, oblong, 1.2–1.5 × 0.8–1 mm.

brown, oblong, 1–1.6 × 0.8–1.2 mm.

and basal leaves absent.

= 16.